Toe-bolt



F. C. KNAPIK.

Patented Dee. 13, 1921.

UNITED STATE.S

FRANK G. KNAPIK, B BALTIMORE, MARYLAND.

Specification of Letters Patent.

Pemtented Beo. 13, 1921.

App1ication filed J'anuary 29, 1920. Serial N o. 354,860.

T 0 all w7wm zt ma;y concem:

Be it knewn that I, FRANK C. KNAPIK, a citizen of the United Staates,residing a Baltimore city, State of Maryland, have invented certain newand useful Improvements in Tee-Bolts, of which the following is a,speeifieation.

The holt which is che subject matter 013 ehe present application f0rpatent has been de.- signed 1n01e particularly l:'or use in places wherelt is impossible to insert an ordinary headed holt from the Teer 0f theparts to be fastened thereby, und the invention has for its object toprovide a holt of novel and improved design which c2u1 be reaclilyinsertecl through a holt hole from the front, and which Will hold thepa1ts t0 be fastened together as firmly es an ordinznry headed holt.

With the object staced in view, the invention consists in e novelcombination anal a1- mngement 013 parts t0 he hereinafter clescribed undclaimed, 2mnd in order that the sa1ne may be heiter understood,referenee is lmd 130 the accompanying drawing forming a part 019 thisspecification.

In the huwing, Figre l is an elevation 0l" the boltwith the arts throughWhich it asses shown in section, and Fig. 2 is a cr0sssection 0f theholt 011 the line 2-2 of Fig. l.

Referring specifically to ehe drawing, 5 m1d 6 denote tw0 plates erother members to be fastened togeher by 0ne 01 moe holts. The drawingshows 0ne holt as this suffiees to illustrate the invention. The holthole in the arts 5 and 6 is sl1own et 7.

The holt which is the subj ect matter 0I" the present upplicatlon forpatent consists of a shank 8 provided with a head 9 at one end, andhaving lts other end threaded es shown all 10, and terminating in asl1ort angular portion l1. 011 "ehe threaded porion of t-he holt shankis shown a nut 12, und under ehe lntter seats a spring lock washer 13.

The unthreaded ortion 8 0f the holt shank is not 0'f uniform diameterthrough- 0ut its entire length, but lt is gradually reduced in diameter,0r tapered, in the direee1on 0I" the hezul 9. This taper or reduetion 18on one side of the shank only, so that he1e the e1de 0f the shank is notparallel 130 its long1tudinal axis, but is inelifled thereto, as elearlyshown in Fig. l. The head 9 pro- ]ects laterally from 0ne side 0'f theholt shanlgonly, this being fihe side diametrically oppos1te the taperedside. The width 0'f the head 9 also does n0t enceed Ehe diameter 0f theholt hole 7.

Referring to Fig. 1 it Will be evident that the holt can be readilyinserted th1'ough the holt hole 7 from the front end thereof. This 1sdene hy tilting 01 canting the holt and pass1ng 1t through Ehe holt holeobliquely. The extent t0 Whieh the holt can he tilted depends on theamount 0f taper 01. the part 8, and this Will very with the size of theholt. When the holt is tilted es described, its heed 9 can pass throughthe hole 7, and when the head emerges from the rear end of the hole, theholt can be straightened out t0 occupy its proper position in the holthole, as shoWn in Fig. l, The nut 12 und the washer 13 nmy then aoeapplied t0 cornplete the fastening. The squared end 11 cf the holtpermits the applicati0n 0f a wrench t0 prevent the holt from turningwhile the nut 12 is being screwed up.

A holt construoted as hereinbefore described can he easily and quicklyapplied, and lt makes a fastening which is in all respects as firm andrigid as that which is ohtained hy any ordinary holt.

I elaim:

A holt comprising a shank and a head 011 one end thereof, seid headprojecting 1"r0rn 0ne side of the shank only and its widch not exeeedingthe diameter 0f he shank the shank being inelined to its longitudinalaxis 011 one slde to ol tain a taper in the direction 0f the head, undseid head projecting fren1 tha side 0'f the shank which is diametricallyopposite the inclined side.

In testimony whereof I affiz; my signuture.

FRANK C. KNAPIK.

